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NewtonApple
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In the following http://electrons.wikidot.com/solar-cells
it mentioned that
how and when n-side becomes positive?
it mentioned that
how and when n-side becomes positive?
The electron drifts and reaches the neutral n+-side whereupon it makes this region negative by an amount of charge -e.
A photovoltaic device, also known as a solar cell, is made up of layers of silicon and other materials that create an electric field. When sunlight hits the cell, it knocks electrons loose from the atoms in the silicon, creating a flow of electricity.
The efficiency of a photovoltaic device depends on several factors, including the quality of the materials used, the amount of sunlight hitting the cell, and the temperature of the cell. Higher quality materials and more direct sunlight can lead to higher efficiency.
While photovoltaic devices work best in direct sunlight, they can still generate electricity on cloudy days or in low light conditions. The cell will still absorb some sunlight and produce a small amount of electricity, although not as much as on a sunny day.
One of the main advantages of using photovoltaic devices is that they use a renewable energy source - the sun. They also have no moving parts, making them low maintenance and quiet. Additionally, they can be installed in a variety of locations, making them versatile for different needs.
The lifespan of a photovoltaic device can vary depending on the quality of materials and maintenance. On average, they can last anywhere from 25-30 years. However, with regular maintenance and proper care, they can last even longer.